Absolute dating exercise

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Explore this link for additional information on the topics covered in this lesson: This activity will help students to have a better understanding of the basic principles used to determine the age of rocks and fossils. Objectives of this activity are: 1) To have students determine relative age of a geologically complex area.2) To familiarize students with the concept of half-life in radioactive decay.Understand how decay and half life work to enable radiometric dating.Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.This activity on determining age of rocks and fossils is intended for 8th or 9th grade students.It is estimated to require four hours of class time, including approximately one hour total of occasional instruction and explanation from the teacher and two hours of group (team) and individual activities by the students, plus one hour of discussion among students within the working groups.Steno developed a set of Laws (Steno's Laws) to help explain his method of inferring the ages of geological structures.

Learn about different types of radiometric dating, such as carbon dating.

Following this introduction, there are several links to different sites concerning the methods scientists use to assist them in estimating the age of the Earth.

You will investigate Steno's Laws, radiometric dating, and then visit an interactive site that will help you better understand how to tell time - with geology! As you proceed through Assignment 4, be sure to compare your answers from "If Scientists Think. ." to the actual methods scientists use to estimate the age of prehistoric objects.

Access this lesson's reading by clicking on the Library Resources in Canvas, then clicking on the "E-Reserves" link. 94-95, "Postlab Problem." Record all of your work in a word processing document.

When you have completed this activity, you will be asked to submit your answers electronically by copying and pasting your answers into an online submission form included in module 8 of Canvas.

If you have any questions about the lesson materials or assignments, post them to our online discussion forum (not e-mail). While you are there, feel free to post your own responses if you, too, are able to help out a classmate!

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